Mid-infrared three-color image of the L1527 bipolar outflow, using JWST MIRI broadband imaging at 5.6 μm (red), 7.7 μm (green), and 12.8 μm (blue). The region spans 1.43′ × 0.83′, corresponding to a physical scale of 12 000 au × 7000 au at a distance of 140pc. The prominent blue emission at the left edge is not physical, but an artifact of color stretch. Right: zoomed-in view of the 500 au central region with brightness scaled to reveal the bipolar outflow lobes. The position of the forming protostar is marked by a star symbol. Two circular apertures of ~0″.3 radius in red and blue correspond to the area where the MIRI/MRS spectra were extracted. Bottom: Spectra obtained at the aperture positions across the full MIRI/MRS wavelength range (5-28 μm). The red-colored spectra correspond to the eastern lobe, whereas the blue spectra correspond to the western lobe. Flux density of both spectra are scaled for visual offset.